<?php
/**
 * ZIHAIMX [ WE CAN DO IT JUST ENJOY ]
 * 默认分页
 * @since   2016-12-08
 * @author  TechLee <767049337@qq.com>
 */

namespace paginator;

use think\Paginator;

class Wejoy extends Paginator
{

    /**
     * 上一页按钮
     * @param string $text
     * @return string
     */
    protected function getPreviousButton($text = "上一页")
    {

        if ($this->currentPage() <= 1) {
            return $this->getDisabledTextWrapper($text);
        }

        $url = $this->url(
            $this->currentPage() - 1
        );

        return $this->getPageLinkWrapper($url, $text);
    }

    /**
     * 下一页按钮
     * @param string $text
     * @return string
     */
    protected function getNextButton($text = '下一页')
    {
        if (!$this->hasMore) {
            return $this->getDisabledTextWrapper($text);
        }

        $url = $this->url($this->currentPage() + 1);

        return $this->getPageLinkWrapper($url, $text);
    }

    /**
     * 页码按钮
     * @return string
     */
    protected function getLinks()
    {
        if ($this->simple)
            return '';

        $block = [
            'first'  => null,
            'slider' => null,
            'last'   => null
        ];

        $side   = 3;
        $window = $side * 2;

        if ($this->lastPage < $window + 6) {
            $block['first'] = $this->getUrlRange(1, $this->lastPage);
        } elseif ($this->currentPage <= $window) {
            $block['first'] = $this->getUrlRange(1, $window + 2);
            $block['last']  = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
        } elseif ($this->currentPage > ($this->lastPage - $window)) {
            $block['first'] = $this->getUrlRange(1, 2);
            $block['last']  = $this->getUrlRange($this->lastPage - ($window + 2), $this->lastPage);
        } else {
            $block['first']  = $this->getUrlRange(1, 2);
            $block['slider'] = $this->getUrlRange($this->currentPage - $side, $this->currentPage + $side);
            $block['last']   = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
        }

        $html = '';

        if (is_array($block['first'])) {
            $html .= $this->getUrlLinks($block['first']);
        }

        if (is_array($block['slider'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['slider']);
        }

        if (is_array($block['last'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['last']);
        }

        return $html;
    }


    /**
     * 渲染分页html
     * @return mixed
     */
    public function render()
    {
        if ($this->hasPages()) {
            if ($this->simple) {
                return sprintf(
                    '<div class="wejoy_page" '.$this->getPaginationStyle().'>%s %s</div>',
                    $this->getPreviousButton(),
                    $this->getNextButton()
                );
            } else {
                return sprintf(
                    '<div class="wejoy_page" '.$this->getPaginationStyle().'>%s %s %s</div>',                    
                    $this->getPreviousButton(),
                    $this->getLinks(),
                    $this->getNextButton()
                );
            }
        }
    }
    protected function getNextButton2($text = '')
    {
    	if (!$this->hasMore) {
    		return $this->getDisabledTextWrappernext($text);
    	}
    
    	$url = $this->url($this->currentPage() + 1);
    
    	return $this->getPageLinkWrapper2($url, $text);
    }
    protected function getAvailablePageWrapper2($url, $page)
    {
    	return '<a class="next" href="' . htmlentities($url) . '"  '.$this->getWrapperStyle().'>' . $page . '</a>';
    }
    protected function getPageLinkWrapper2($url, $page)
    {
    	if ($page == $this->currentPage()) {
    		return $this->getActivePageWrapper($page);
    	}
    	return $this->getAvailablePageWrapper2($url, $page);
    }
    
    protected function getPreviousButton2($text = "")
    {
    
    	if ($this->currentPage() <= 1) {
    		return $this->getDisabledTextWrapperprev($text);
    	}
    
    	$url = $this->url(
    			$this->currentPage() - 1
    	);
    
    	return $this->getPageLinkWrapperpre2($url, $text);
    }
    protected function getDisabledTextWrapperprev($text)
    {
    	return '<a class="disabled" class="prev" >' . $text . '</a>';
    }
    protected function getDisabledTextWrappernext($text)
    {
    	return '<a class="disabled" class="next" >' . $text . '</a>';
    }
    protected function getPageLinkWrapperpre2($url, $page)
    {
    	if ($page == $this->currentPage()) {
    		return $this->getAvailablePageWrapperpre2($page);
    	}
    	return $this->getAvailablePageWrapperpre2($url, $page);
    }
    protected function getAvailablePageWrapperpre2($url, $page)
    {
    	return '<a class="prev" href="' . htmlentities($url) . '" '.$this->getWrapperStyle().'>' . $page . '</a>';
    }
    
    public function render2()
    {
    	if ($this->hasPages()) {
    		
    			return sprintf(
    					'<div  class="paging container" >%s %s</div>',
    					$this->getNextButton2(),
    					$this->getPreviousButton2()
    					
    			);
    		
    	}
    }
  
    protected function getNextButton3($text = '')
    {
    	if (!$this->hasMore) {
    		return $this->getDisabledTextWrappernext($text);
    	}
    
    	$url = $this->url($this->currentPage() + 1);
    
    	return $this->getPageLinkWrapper3($url, $text);
    }
    protected function getAvailablePageWrapper3($url, $page)
    {
    	return '<span class="next"><a href="' . htmlentities($url) . '" >'.'<img src="/public/static/wap/img/next.png" alt="" />' . $page . '</a></span>';
    }
    protected function getPageLinkWrapper3($url, $page)
    {
    	if ($page == $this->currentPage()) {
    		return $this->getActivePageWrapper($page);
    	}
    	return $this->getAvailablePageWrapper3($url, $page);
    }
    
    protected function getPreviousButton3($text = "")
    {
       
    	if ($this->currentPage() <= 1) {
    		return $this->getDisabledTextWrapperprev3($text);
    	}
    
    	$url = $this->url(
    			$this->currentPage() - 1
    	);
    
    	return $this->getPageLinkWrapperpre3($url, $text);
    }
    protected function getDisabledTextWrapperprev3($text)
    {
    	return '<a class="disabled" class="prev" >' . $text . '</a>';
    }
    protected function getDisabledTextWrappernext3($text)
    {
    	return '<a class="disabled" class="next" >' . $text . '</a>';
    }
    protected function getPageLinkWrapperpre3($url, $page)
    {
    	
    	if ($page == $this->currentPage()) {
    		return $this->getAvailablePageWrapperpre3($page);
    	}
    	return $this->getAvailablePageWrapperpre3($url, $page);
    }
    protected function getAvailablePageWrapperpre3($url, $page)
    { 
    	
    	echo '<span class="prev"><a href="' . htmlentities($url) . '" >'.'<img src="/public/static/wap/img/prev.png" alt="" />' . $page . '</a></span>';
    	
    	//return '<a class="prev" href="' . htmlentities($url) . '" '.$this->getWrapperStyle().'>' . $page . '</a>';
    	return '<span class="prev"><a href="' . htmlentities($url) . '" >'.'<img src="/public/static/wap/img/prev.png" alt="" />' . $page . '</a></span>';
    	
    }
    
    public function render3()
    {
    	if ($this->hasPages()) {
    
    		return sprintf(
    				
    				$this->getNextButton3(),
    				$this->getPreviousButton3()
    					
    		);
    
    	}
    }
    
    
    
    /**
     * 生成一个可点击的按钮
     *
     * @param  string $url
     * @param  int    $page
     * @return string
     */
    protected function getAvailablePageWrapper($url, $page)
    {
        return '<a href="' . htmlentities($url) . '" '.$this->getWrapperStyle().'>' . $page . '</a>';
    }

    /**
     * 生成一个禁用的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getDisabledTextWrapper($text)
    {
        return '<a class="disabled" '.$this->getWrapperStyle().'>' . $text . '</a>';
    }

    /**
     * 生成一个激活的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getActivePageWrapper($text)
    {
        return '<a class="active" '.$this->getWrapperStyle().'>' . $text . '</a>';
    }

    /**
     * 生成省略号按钮
     *
     * @return string
     */
    protected function getDots()
    {
        return $this->getDisabledTextWrapper('...');
    }

    /**
     * 批量生成页码按钮.
     *
     * @param  array $urls
     * @return string
     */
    protected function getUrlLinks(array $urls)
    {
        $html = '';

        foreach ($urls as $page => $url) {
            $html .= $this->getPageLinkWrapper($url, $page);
        }

        return $html;
    }

    /**
     * 生成普通页码按钮
     *
     * @param  string $url
     * @param  int    $page
     * @return string
     */
    protected function getPageLinkWrapper($url, $page)
    {
        if ($page == $this->currentPage()) {
            return $this->getActivePageWrapper($page);
        }
        return $this->getAvailablePageWrapper($url, $page);
    }

    /**
     * 按钮样式
     * @return string
     */
    protected function getWrapperStyle(){
        return 'style="border:1px solid #ccc;display:inline-block;padding:2px 8px;"';
    }

    /**
     * 分页样式
     * @return string
     */
    protected function getPaginationStyle(){
        return 'style="display: inline-block;padding-left: 0;margin: 20px 0;border-radius: 4px;"';
    }
}